<!DOCTYPE html>
<html>
<head meta>
    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
    <title>Register</title>
    <style>
        body{
            display:flex;
        }
        #background{
            width:100%;
            height:1020px;
            background-image:url("https://p15.qhimg.com/t01a9a9f9751d3d054a.jpg");
            background-repeat:no-repeat;
            background-size: cover;
        }
        #content{
            color:black;
            font-size: xx-large;
            font-weight: bolder;
            text-align: center;
        }
    </style>
</head>
<body>
<div id="background">
    <div id="content">${name},今天是你的生日，生日快乐</div>
</div>
</body>
</html>